SWOT is an acronym for Strengths, Weaknesses, Opportunities and Threats, and it is an essential component of your project. The following links will help you to find out more about how to do it:
https://www.mindtools.com/pages/article/newTMC_05.htm
http://esl-educate-school-learn.blogspot.com/2012/02/swot-analysis.html
https://www.youtube.com/watch?v=I_6AVRGLXGA
The data you collected in the second stage will help to design this part of the project. The analysis can derive from customer reviews, opinions, or information from press articles, which will allow you to identify both internal aspects (strengths and weaknesses) and external aspects (opportunities and threats). Remember to mention your information sources.
It is mandatory to present an analysis of the strengths and weaknesses, while the opportunities and threats can be analysed optionally as well if you wish to aim at a higher qualification.
As in the previous stages, you can post the text on this blog.